JPH0638910A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To improve the usability and operational properties by reducing the weight put on a handle when the user grips it, and making the length between the handle and a floor nozzle adjustable to obtain the correct length for each user. CONSTITUTION:An end part 32 of a hose 28, connected to a suction opening 30 of a vacuum cleaner body 21, is directly coupled to a floor nozzle pipe 34 of a floor nozzle 33. The pipe 34 and a handle 37 are coupled with a support 38, which consists of a main support 38e and a subsupport 38b which are telescopic, and has a holder 44 for adjusting a position of the subsupport 38b to the main one 38a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner which is used by connecting a hose to a vacuum cleaner body.

[0002]

2. Description of the Related Art Conventionally, an electric vacuum cleaner of this type has been disclosed in Japanese Patent Laid-Open No.
As disclosed in Japanese Patent Publication No. 151925, etc., a handle is arranged at the other end of a hose connected to a main body, and a floor nozzle is generally connected to the end of the handle via an extension pipe forming an intake passage. Met.

A description will be given below with reference to FIGS. 8 and 9.
Reference numeral 1 denotes an electric vacuum cleaner main body (hereinafter referred to as a main body) in which a dust collection chamber 2, a motor 3 and the like are arranged. Reference numeral 4 is an intake port provided in the main body 1 in front of the dust collection chamber 2 and is a connection pipe 6 of the hose 5.
Connect. An extension pipe 8 is connected to the handle 7 of the hose 5, and a floor nozzle 10 is connected to the end of the extension pipe 8 via a floor nozzle pipe 9. Also, the handle 7
A switch 11 for controlling the rotation of the motor 3 and the like and a converter 12 for converting an input from the switch 11 into a control signal are built therein.

In Japanese Patent Laid-Open No. 195529/1993, the light emitting element 14 and the light receiving element 15 are used as detection means for detecting the amount of dust in the dust suction passage 13 as shown in FIG. In some cases, the handle 7 has a built-in control board 17 that faces the relative position inside and controls the rotation of the motor 3 or the like according to the amount of light received by the light receiving element 15 or operates the display 16.

Further, in Japanese Examined Patent Publication No. 3-77733, etc., as shown in FIG. 10, a dust suction passage 13 is formed for supplying power to an electric motor 19 for driving a rotary brush 18 incorporated in the floor nozzle 10. Conductive wire 2 on extension pipe 8
It had a built-in 0.

[0006]

However, in the above structure, the switch 11 and the conversion unit 1 are provided in the handle 7.
2, and further, the light emitting element 14, the light receiving element 15, the control board 1
Since 7 and the like are built in, the handle 7 becomes large and heavy, and the arm becomes very tired when it is used. Also, the floor nozzle 10 and the handle 7 of the hose 5
Since the extension pipe 8 connecting the and forms an intake passage and mainly uses plastic as a material, a certain thickness is required to have strength, and it becomes large and heavy. It was one of the causes of the strain on the hands during use. Further, in the case where the electric motor 19 for giving a driving force to the rotary brush 18 included in the floor nozzle 10 is built in, a conductive wire 20 is provided in the extension pipe 8 separately from the intake passage for supplying power to the electric motor 19. Therefore, the extension tube 8 becomes larger and heavier. Furthermore, since the handle 7 that is the grip of the hand is arranged at the tip of the hose 5, the hose 5 is always displaced at the base of the handle 7 when the handle 7 is moved, and the force due to this displacement is applied to the handle 7. It was transmitted and put a strain on the hands.

Further, as shown in FIG. 11, since the handle 7 is large and heavy, it is easy to get tired when using an attachment such as a gap nozzle, and the usability in a narrow space is very poor.

Furthermore, in the case where the conductive wire 20 is provided in the extension tube 8 as in Japanese Patent Publication No. 3-77733 shown in FIGS. 12 and 13, the electrical connection of the conductive wire 20 and air tightness etc. There is a problem, it is technically very difficult, and the expansion and contraction structure of the extension tube 8 having the conductive wire 20 built therein is not realized because the structure becomes complicated and the cost increases.

Therefore, since the length of the extension tube 8 cannot be adjusted with the extension tube 8 having the conductive wire 20 built therein, the height of the handle 7 changes depending on the height of the user's back, and the angle of the extension tube 8 changes. Since the distance between the person and the floor nozzle 10 is changed, the usability is poor. In addition, when the extension tube 8 is connected to the hose 5 even when it is stored, it is difficult to store the extension tube 8 because of its high height. As another example of the storage, a method of removing the extension tube 8 from the hose 5 is conceivable. Also,
It had to be assembled when it was used and was extremely inconvenient.

As described above, in the conventional structure, the burden on the hand at the time of use is very large, it is very inconvenient to use, and the storability is poor.

The present invention solves such a problem, and aims to improve the usability by reducing the size and weight between the handle 7 and the floor nozzle 10 to reduce the burden on the hand during use. At the same time, the distance between the handle 7 and the floor nozzle 10 can be changed, so that the distance between the floor nozzle 10 and the height of each user's height can be adjusted to improve the operability. The purpose is to do.

[0012]

Means for Solving the Problems The technical means of the first invention for solving the above problems includes a motor and the like,
An electric vacuum cleaner main body having an intake port formed in a front portion, a hose connected to the intake port of the electric vacuum cleaner main body, a floor nozzle grounded to the floor surface, and a handle operated by a user are provided, and the floor nozzle is a hose. A means for connecting the floor nozzle and the handle to each other to form an intake passage and for connecting the floor nozzle to the handle, to build a conductive wire in the support body, and to expand and contract the support body. is there.

According to a second aspect of the present invention, the handle has a connecting body connected to a holder for fixing the supporting body to an arbitrary length, and the holding body is operated by the connecting body to release the expansion and contraction of the supporting body. It is configured to be fixed.

[0014]

The operation of the above configuration is as follows.

According to the first aspect of the present invention, the hose is directly connected to the floor nozzle, and the handle, which is the grip of the hand during use, is connected to the floor nozzle through the support, so that it is necessary to use the extension tube. When used, the weight of the handle portion is reduced and the usability is improved. Further, since the intake passage corresponding to the length of the extension pipe is unnecessary, the pressure loss at the time of intake is reduced and a high suction work rate can be realized.

Further, even if the hose is formed long, the weight applied to the handle portion does not increase. Therefore, by forming the hose long, the weight of the handle portion does not increase and a light operation can be achieved. It is possible to clean a wide area without moving and to significantly improve usability. Further, since the support is formed separately from the dust suction passage, a conductive wire for supplying power to an electric motor for driving the rotating brush built in the floor nozzle is built in the support, and the support can be expanded and contracted. There is no need to consider electrical connection, air tight, etc., and because it can be easily configured, the distance from the handle to the floor nozzle can be adjusted according to the height of the user's height to obtain the optimum length. Is something that can be done. Furthermore, since the support can be expanded and contracted, it can be stored compactly by installing the floor nozzle and hose by retracting the support during storage, and it can be stored in a small storage space and can be retracted when reused. It can be used immediately just by extending the support, and the usability can be improved.

According to the second aspect of the present invention, the handle is provided with a connecting body connected to a holder for fixing the supporting body to an arbitrary length, and the holder is operated by the connecting body to release the expansion and contraction of the supporting body. By fixing, the expansion and contraction of the support can be adjusted by the connecting body arranged on the handle held by the user,
Since the support can be easily expanded and contracted, the usability can be improved.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1 to FIG. 4, reference numeral 21 denotes a dust collecting chamber 22 having an upward opening on the front side, and a motor 23 for sucking dust and a cord winding device 25 having a power cord 24 wound on the rear thereof. In the built-in vacuum cleaner main body (hereinafter referred to as the main body), a paper bag 26 accumulating dust is detachably attached to the dust collection chamber 22, and a lid 27 is provided so as to cover the upper opening thereof.
Is rotatably arranged on the main body 21. A front cover 31 having an intake port 30 to which a connection pipe 29 of a hose 28 is attached is attached to the front of the main body 21, and a floor nozzle 33 is attached to a tip end portion 32 of the hose 28 via a floor nozzle pipe 34. Have been installed. The main body 2
In FIG. 1, a caster 35 for movement is arranged on the lower surface and a roller 36 is arranged on the side surface. Reference numeral 37 denotes a handle used when the user grasps the floor nozzle 33 when cleaning the floor nozzle 33 and operates the floor nozzle 33.
8 are linked together. The handle 37 has a switch A41 for operating and stopping an electric motor 40 that gives a driving force to a rotating brush 39 built in the floor nozzle 33, and a main body 2
A switch B42 for operating and stopping the first motor 23 is provided, and a conductive wire 44 for transmitting signals from the switch A41 and the switch B42 to the converter 43 built in the floor nozzle pipe 34 is built in the support body 38. There is. Further, the floor nozzle pipe 34 has a suction passage 4 as a means for detecting the amount of dust.
5, a light emitting element 46 and a light receiving element 47 are arranged at relative positions, and a display section 48 for displaying a dust amount to a user by a signal from the light receiving element 47 is provided. The support 38 includes a main support 38a and a sub-support 38.
The main support 38a is a sub-support 38b.
The diameter is larger than that of the sub-support 38b so that the sub-support 38b can be slid inward. In addition, the sub-support 3 of the main support 38a
A holder 49 is arranged on the end face on the 8b side, and this holder 49 has a buckle 52 having a claw portion 52 'biased by a spring A51 about a shaft 50 as a rotation center, and a sub-support 38b.
The claw portions 52 'are adapted to engage with the concave portions 53 formed at several positions.

The operation of the above configuration is as follows. The handle 37 is grasped to operate the floor nozzle 33 to perform cleaning, but at this time, the hose 28 is connected to the floor nozzle pipe 34 of the floor nozzle 33, and the handle 37 does not bear the weight of the hose 28 and is extended. Since the tube is not used, the weight of the extension tube, which was conventionally applied to the handle 37, can be reduced, and the weight applied to the handle 37 can be significantly reduced. In addition, the floor nozzle pipe 3 of the floor nozzle 33
By directly connecting the hose 28 to 4, the intake passage 45, which is conventionally formed by the extension pipe, is shortened, so that the pressure loss during intake can be reduced. Furthermore, since the weight applied to the handle 37 does not change even if the hose 28 is lengthened, it is possible to clean a wide range without hindering usability and moving the main body 21 too much.

Further, the support 38 having the conductive wire 44 built therein is composed of a main support 38a and a sub-support 38b. When the support 38 is expanded and contracted, the buckle 52 is pressed down so that the claw portion 52 'is formed. The sub-support 38b is removed from the recess 53 formed in the sub-support 38b with respect to the main support 38a.
The sliding movement of the claw 5 against the next recess 53.
2'is hooked by the urging force of the spring A51 so as to be fixed and the length of the support 38 is adjusted.
Further, when storing after cleaning, similarly, by operating the buckle 52 of the holder 49 to adjust and store the support body 38 to be the shortest, it is possible to clean up in a small space and to support the support body 38. It can be cleaned immediately by extending.

Further, as shown in FIG. 5, the floor nozzle pipe 3
4 to remove the tip 32 of the hose 28 from the tip 32
In addition, since the tip portion 32 is lightweight and small when cleaning is performed using an attachment such as a shelf nozzle, it is very easy to use with less burden on the hand.

In the second invention, as shown in FIGS. 6 and 7, a plate member 55 having a hole 54 for engaging with the claw portion 52 'of the buckle 52 of the holder 49 is provided, and this plate is further provided. Body 55
A long hole 56 is formed at the relative position of the spring A51, and the plate 55 is provided along the main support 38a with the handle 3
It is connected to the lever 57 arranged in 7. The lever 57 is biased by a spring B58 in a direction in which the hole 54 does not engage with the claw portion 52 '. 59 is the plate 55
Is a cover disposed on the main support 38a so as to cover the.

As a result, when the lever 57 of the handle 37 is pushed in the A direction as shown in FIG. 6, the plate member 55 moves in the B direction and the hole 43 engages with the claw portion 52 ', so that the claw portion 52' is engaged. 'Is pushed up to come out of the recess 53 of the sub-support 38b, and the sub-support 38b can slide.
When the hand is released from 7, the hole 54 is formed by the spring B58.
Since it moves in a direction away from 2 ', it is engaged and fixed in the next concave portion 53 in the sliding movement of the sub support 38b.

[0025]

As described above, the present invention obtains the following great effects.

According to the first aspect of the present invention, the hose is directly connected to the floor nozzle, and the handle, which is the grip portion at the time of use, and the floor nozzle are connected by the support member, thereby forming the conventional intake passage and the handle. There is no need to use an extension pipe that was connected to the floor nozzle, the weight of the extension pipe is not applied to the handle, and the hose is directly connected to the floor nozzle without connecting to the handle, so Such a weight is significantly reduced, and cleaning can be performed with a very light operating force without imposing a heavy burden on the hand, and remarkable operability can be improved. Further, by directly connecting the hose and the floor nozzle, the intake passage corresponding to the extension pipe is eliminated, so that the pressure loss of intake air is reduced and the suction force can be improved. In addition, increasing the length of the hose does not increase the weight on the handle,
With the weight on the handle lightened, the hose can be lengthened to clean the wide range without moving the main body too much. It is possible to improve the sex.

Further, since the support does not serve as a dust collection passage, it is not necessary to consider electrical connection, air tightness, etc.
It is possible to easily configure the stretchable structure of the support,
By incorporating a conductive wire in the support and arranging means for making the support expandable and contractible, the length of the support can be adjusted according to the height of the user's back, and It can be improved.

Furthermore, even if the floor nozzle and the hose are attached, the support can be compactly stored by keeping the support in a contracted state, and the storability can be improved. It can be used and its usability can be improved.

According to the second aspect of the invention, by disposing the connecting body connected to the means for allowing the support body to expand and contract on the handle, the expansion and contraction of the support body can be easily operated by the handle portion, and the operability is improved. Can be improved.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of an electric vacuum cleaner showing an embodiment of the first invention.

FIG. 2 is a sectional view of an essential part showing an embodiment of the first invention.

FIG. 3 is a sectional view of an essential part showing an embodiment of the first invention.

FIG. 4 is a sectional view of an essential part showing an embodiment of the first invention.

FIG. 5 is a side view showing the usage state of the attachment according to the embodiment of the first invention.

FIG. 6 is a sectional view of an essential part showing an embodiment of the second invention.

FIG. 7 is a sectional view of an essential part showing an embodiment of the second invention.

FIG. 8 is a side view of an electric vacuum cleaner showing a conventional example.

FIG. 9 is a sectional view of a handle showing a conventional example.

FIG. 10 is a sectional view of a handle showing another conventional example.

FIG. 11 is a side view showing a usage state of the attachment in the conventional example.

FIG. 12 is a side view of an electric vacuum cleaner showing another conventional example.

FIG. 13 is an exploded perspective view of an extension pipe including a conductive wire in a conventional example.

[Explanation of symbols]

 21 Main Body 28 Hose 32 Tip Part 33 Floor Nozzle 34 Floor Nozzle Pipe 37 Handle 38 Support 38a Main Support 38b Sub Support 41 Switch A 42 Switch B 44 Conductive Wire 49 Holder 50 Shaft 51 Spring A 52 Buckle 52 'Claw 53 recessed part 54 hole 55 plate body 56 long hole 57 lever 58 spring B 59 cover

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masafumi Okamoto 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. A vacuum cleaner main body having a built-in motor and the like having an intake port formed in the front, a hose connected to the intake port of the vacuum cleaner main body, a floor nozzle grounded to the floor surface, and operated by a user. A handle, the floor nozzle is connected to a hose to form an intake passage, and a support is provided to connect the floor nozzle and the handle, and a conductive wire is built in the support and a support is provided. An electric vacuum cleaner having a means for expanding and contracting. 2. A holder comprising a plurality of supporting members as means for making the supporting member expandable and contractible, and a sub-supporting member sliding on the main supporting member and fixing the supporting member at an arbitrary position. The vacuum cleaner according to claim 1, wherein 3. A handle is provided with a connector connected to a holder for fixing the support to an arbitrary length, and the holder is operated by the lever to release and fix the support. The vacuum cleaner according to claim 1, wherein: